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(Yahoo!) - Britney Spears's little sister Jamie Lynn Spears is making a name for herself in country music, and she may eventually give her superstar sibling a run for her money. The 22-year-old former Nickelodeon star released her debut country single, "How Could I Want More," last week, and it has already debuted on the Billboard charts.

On Thursday she made an impressive live debut at famed Georgia club Eddie's Attic, where she road-tested some of her new country jams. Although she was in the spotlight, she didn't fail to give a shout-out to her big sister Britney by covering her hit "Oops!...I Did It Again." The singer worked it into a medley with her song "Miss Mississippi" and gave it a decidedly country flair, backed by an acoustic guitar, banjo, and drums.

The crowd ate it up, whooping and hollering when she sang the chorus and doing the heart-palpitating dance move that Britney made famous in her outerspace-themed video for the tune. "You gotta throw it back to your sister at some point, right?" Spears told the crowd when the song ended. "My sister's been a big influence so of course I've got to throw it back to her, so a big round of applause for my sister," she said, and the crowd cheered and clapped.

While some people are surprised that Jamie Lynn is pursuing a career in country music rather than following in her pop star sister's footsteps, she says it's a natural fit for her because it harkens back to her roots.

"I think people forget that I grew up in Louisiana, and that my father is as southern as they come," she told Billboard. "Country music was a big part of me and my dad's relationship, and still is. I understand where people would assume I'd [be a] pop [act]. I mean, my sister is a pop icon, so I completely get where people would've expected that!"